Decibel Limits: Castaic vs Norwalk
How do decibel limits rules compare between Castaic, CA and Norwalk, CA?
Castaic and Norwalk have similar restriction levels.
Castaic, CA
Los Angeles County
LA County Code Section 12.08.390 establishes tiered exterior noise standards by zone for unincorporated areas. Residential limits are 50 dBA day and 45 dBA night. Commercial zones allow 60/55 dBA and industrial zones allow 70 dBA at all times.
View full Castaic rules →Norwalk, CA
Los Angeles County
LA County Code Section 12.08.390 establishes tiered exterior noise standards by zone for unincorporated areas. Residential limits are 50 dBA day and 45 dBA night. Commercial zones allow 60/55 dBA and industrial zones allow 70 dBA at all times.
View full Norwalk rules →Key Facts Comparison
| Fact | Castaic | Norwalk |
|---|---|---|
| Code Section | §12.08.390 | §12.08.390 |
| Residential Day | 50 dBA | 50 dBA |
| Residential Night | 45 dBA | 45 dBA |
| Commercial Day | 60 dBA | 60 dBA |
| Industrial | 70 dBA always | 70 dBA always |
Highlighted rows indicate differences between cities.
Castaic FAQ
What are the decibel limits in unincorporated LA County?
Residential areas are limited to 50 dBA during the day and 45 dBA at night. Commercial zones allow 60 dBA daytime and 55 dBA nighttime. Industrial zones permit 70 dBA at all times.
How are noise violations measured in LA County?
Noise is measured at the property line of the affected party using the A-weighted decibel scale. Duration matters too — exceeding limits for more than 30 minutes per hour triggers Standard No. 1.
Norwalk FAQ
What are the decibel limits in unincorporated LA County?
Residential areas are limited to 50 dBA during the day and 45 dBA at night. Commercial zones allow 60 dBA daytime and 55 dBA nighttime. Industrial zones permit 70 dBA at all times.
How are noise violations measured in LA County?
Noise is measured at the property line of the affected party using the A-weighted decibel scale. Duration matters too — exceeding limits for more than 30 minutes per hour triggers Standard No. 1.
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